Line drawing apparatus



FIG. 1 is a perspective view of a line drawing apparatus showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view with an opposite side elevational view being identical;

FIG. 5 is a top plan view thereof;

FIG. 6 is a perspective view of a second embodiment of the invention used to draw a circle; and,

FIG. 7 is a perspective view of a third embodiment of the invention used to draw three lines;

The paper and lines shown in broken lines in FIGS. 6 and 7 are shown for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a line drawing apparatus, as shown and described. 